Passage 2
Growth in output in East Asia, supported by the continued vibrant performance of the region's exports, particularly in China, accelerated to about 6. 8 per cent in 1991. Despite the slowdown in industrial-country markets, export volumes for the group of East Asian countries advanced at double-digit rates, implying gains in market share. The major risk facing this highly trade-oriented region is the potential for sluggishness in world trade flows. Economic weakness in some of the region's traditional export markets has underlined the importance of market diversification, including a further strengthening of ties within the region. The GDP growth rate in 1991 in the South Asia region was 2. 8% down. The decline was partly caused by India's reining in of its budget deficit and the short-term effects of the implementation of strong emergency stabilization measures, which coupled with the collapse of the Soviet market and recession in the U. S. The emergency measures included a severe compression of imports, tight credit policies and exchange rate devaluation.
What's the meaning of "reining in"in the context?